My name is Simeng Sun (), I am a 2nd year Ph.D. student in Computer Science at UMass Amherst advised by Prof. Mohit Iyyer. Before coming to UMass, I worked closely with Prof. Ani Nenkova while I was a master's student at UPenn. (CV),(Twitter), (Linkedin), (Google Scholar)


Ph.D. student in Computer Science, UMass Amherst Aug. 2019 - now
M.S.E in Computer and Information Science, UPenn Aug. 2017 - May 2019
B.E. in Computer Science and Technology, Beihang University Sep. 2013 - Jun. 2017
Exchange student, Trinity College Dublin Sep. 2015 - Jan. 2016


Research Interests

I am very interested in natural language generation. My previous works have spanned text summarization, neural machine translation, and story generation. Recently I spend most of my time studying language models.


IGA : An Intent-Guided Authoring Assistant
Simeng Sun, Wenlong Zhao, Varun Manjunatha, Rajiv Jain, Vlad Morariu, Franck Dernoncourt, Balaji Vasan Srinivasan, Mohit Iyyer

Energy-Based Reranking: Improving Neural Machine Translation Using Energy-Based Models
Subhajit Naskar, Amirmohammad Rooshenas, Simeng Sun, Mohit Iyyer, Andrew McCallum


Revisiting Simple Neural Probabilistic Language Models
Simeng Sun, Mohit Iyyer
Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL), short, 2021

Hard-Coded Gaussian Attention for Neural Machine Translation
Weiqiu You*, Simeng Sun*, Mohit Iyyer
Annual Meeting of the Association for Computational Linguistics (ACL), long, 2020

The Feasibility of Embedding Based Automatic Evaluation for Single Document Summarization
Simeng Sun, Ani Nenkova
Empirical Methods in Natural Language Processing (EMNLP), short, 2019

How to Compare Summarizers without Target Length? Pitfalls, Solutions and Re-Examination of the Neural Summarization Literature
Simeng Sun, Ori Shapira, Ido Dagan, Ani Nenkova
North American Chapter of the Association for Computational Linguistics (NAACL-HLT), NeuralGen Workshop, 2019

Name Disambiguation for Chinese Scientific Authors with Multi-Level Clustering
Simeng Sun, Hui Zhang, Ning Li, Yong Chen
IEEE International Conference on Computational Science and Engineering (CSE) and IEEE International Conference on Embedded and Ubiquitous Computing (EUC), 2017


CS685: Advanced natural language processing at UMass Amherst, Fall 2020 (TA)
CS585: Introduction to Natural Language Processingat UMass Amherst, Fall 2019 (TA)
CIS520: Machine Learning at UPenn (TA)
CIS421/521: Artificial Intelligence at UPenn, Fall 2018 (TA)


Email: simengsun AT umass DOT edu
Address: CS266, UMass Amherst


I enjoy listening to Lexicon Valley in my spare time.